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      Question

      Two projectiles are launched simultaneously from the

      same point with equal initial speeds but different angles θ and (90°– θ). Which of the following is true about their time of flights and ranges (neglecting air resistance)?
      A Equal time of flight, different ranges Correct Answer Incorrect Answer
      B Equal range, different time of flight Correct Answer Incorrect Answer
      C Different range and different time of flight Correct Answer Incorrect Answer
      D Same range and same time of flight Correct Answer Incorrect Answer

      Solution

      When two projectiles are launched from the same point with equal initial speeds but at angles θ and (90° – θ), their behaviour can be understood using basic projectile motion equations. 1. Time of Flight (T) Time of flight is given by: Thus, time of flights are different , unless θ = 90 ° 2. Range (R) Range is given by: So, both projectiles have the same range . Therefore, the correct answer is option (b).

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